any1 run 10w30 in their diesels?in winter anyways?

 

I run Rotella 15W40 all year long. No problems down to -30F.

 

I run 10w 30 for the cold months. I found the 15w 40 to be to stiff when I first start up in the morning.

 

any1 ever hear of john deere 10w30 break in oil? i was thinking of breaking in engine with it

 

I run Rotella 10w30 in the winter months. I put on too many miles for synthetic ($$$$$).

 

I run IH 10w30 in the winter months because my truck gets parked where their is no plug in. I really like it, seems to crank way faster and start a lot easier.

 

I run 15W40 all year long. I also run around in shorts all "winter" where I live. Sorry, couldn't resist. God bless you guys that have those harsh winters to live through.

 

I know of a few who do use 10w30 in the wintertime. Once you get your rebuilt engine broke in you could use 5w30 HDD synthetic year round like some of us do if you wanted to. BTW once you get a few hundred miles on the new engine I would work the engine by hooking it up to at least a 4,000 lb trailer and run the truck non stop expect for fuel for 2500 miles, then take a break, change the oil & filter and then do the same on the return trip back home and you will have your new engine broke in and the rings seated.

 

i personally think that you might want to consider breaking your engine in with 15w40 oil, made for diesel engines, there is a reason that they have oil stated for diesel motors, as they do gas.

 

I am involved with a group testing 10W30, viscosity with API oil additive pack for diesel engines to reduce fuel consumption, which has shown some success. Oil viscosity is measured as resistance to flow at a set temperature. 0W30, 5W30, 10W30 and SAE 30 at 100 c (212f) are around the same thickness 9cst to 11cst and if there is enough oil film thickness between the two moving surfaces, you will have lubrication. I recall in the manual, there is recomendation to use 10W30 in colder temps (will look again) I use 0W40 XD3, all year long, including pulling a 7000 lbs toy hauler through the rockies. I did add a bypass filter so I only change oil once a year (20,000 miles) which offsets the higher cost of the oil. Oil anaysis shows no issues with the extended drain.
Would I use 10W30 API C_ : if my reason is a slight improvement in fuel consumption or no 0W40 for start up: yes

 

There is diesel specific oil in 10w30.

 

I run Lubrication Engineers 10W30 in my Kubota tractor all year. It works all winter and all summer. Almost the same color coming out as it was going in. It is diesel rated (CH), however I have not run it in my Cummins, (yet).



Tim

 

thanks. i might try the john deere break in oil. i think it doesnt have detergents in it.

since its winter here itll be hard for me to pull my camper since its snowed in.i wonder what else i could do to help break it in?ill go easy the first few hundred miles. what about short 150 km trips on highway unloaded. would that be sufficient to get her broke in?

 

Detergents are in oil for a reason. They help keep your engine clean. I wouldn't run an oil without them.

It takes forever to break in a diesel with unloaded driving. IIRC the little hang tag I got with my truck said 20,000 unloaded miles for break-in.

 

so basically this john deere break in oil i keep hearing about is a scam?